Docker私有仓库2

https://www.cnblogs.com/zeppelin/p/5906410.html

 接着上篇，上面为上篇地址。

#通过docker tag将该镜像标志为要推送到私有仓库

[root@lh-2 ~]# sudo docker tag ubuntu 192.168.0.34:5000/ubuntu
Error response from daemon: no such id: ubuntu
[root@lh-2 ~]# sudo docker tag docker.io/ubuntu 192.168.0.34:5000/ubuntu
Error response from daemon: no such id: docker.io/ubuntu
[root@lh-2 ~]# sudo docker tag 3876b81b5a81 192.168.0.34:5000/ubuntu

#查看镜像

[root@lh-2 ~]# docker images
192.168.0.34:5000/ubuntu           latest              3876b81b5a81        7 months ago        187.9 MB
docker.io/ubuntu                   14.04.3             3876b81b5a81        7 months ago        187.9 MB

#提交ubuntu镜像到私有仓库

[root@lh-2 ~]# sudo docker push 192.168.0.34:5000/ubuntu
The push refers to a repository [192.168.0.34:5000/ubuntu]
5f70bf18a086: Pushed 
0d81735d8272: Pushed 
982549bd6b32: Pushed 
8698b31c92d5: Pushed 
latest: digest: sha256:a47804d268c600572aab1f564e38d1ef009bd7c7ce4bbd325be51973541e5431 size: 1129

#进入容器

[root@lh-2 data]# docker exec -it 6cb333619b90 /bin/sh
/ # ls
bin            entrypoint.sh  home           linuxrc        mnt            root           sbin           sys            usr
dev            etc            lib            media          proc           run            srv            tmp            var
/ # cd /tmp/registry/
/tmp/registry # ls
/tmp/registry # 

发现还是没有镜像

#镜像在容器的/var/lib/registry目录下

~ # cd /var/lib/registry/docker/registry/v2/repositories/
/var/lib/registry/docker/registry/v2/repositories # ls
busybox  nginx    ubuntu
/var/lib/registry/docker/registry/v2/repositories # ll
/bin/sh: ll: not found
/var/lib/registry/docker/registry/v2/repositories # ls -l
total 0
drwxr-xr-x    5 root     root            52 Sep  8 06:46 busybox
drwxr-xr-x    5 root     root            52 Sep  8 09:04 nginx
drwxr-xr-x    5 root     root            52 Sep  8 09:04 ubuntu
/var/lib/registry/docker/registry/v2/repositories #

#切换映射目录

[root@lh-2 registry]# docker run -d -p 5000:5000 -v /opt/data/registry:/var/lib/registry docker.io/registry
bc2304a84ec4cd7eed6b0dabd929141990d2e4f11253941a1fe28856c255aa06
[root@lh-2 registry]# docker push 192.168.0.34:5000/busybox
The push refers to a repository [192.168.0.34:5000/busybox]
8ac8bfaff55a: Retrying in 1 seconds 
Received unexpected HTTP status: 500 Internal Server Error

问题：push镜像报错。

#解决办法：

给这个容器扩展的特权--privileged=true

[root@lh-2 registry]# docker run -d -p 5000:5000 -v /opt/data/registry:/var/lib/registry --privileged=true docker.io/registry
23397ef79ec57f6a077dd50c8ff449c3a1dd6b21b8c13f6e210775ec0975412e

 注：这儿只有加特权才可行，后面我用了registry:2镜像没有这个问题了，估计是最新版本镜像的问题吧。

#提交镜像到本地仓库中

[root@lh-2 registry]# docker images
REPOSITORY                           TAG                 IMAGE ID            CREATED             SIZE
192.168.0.34:5000/busybox            latest              2b8fd9751c4c        11 weeks ago        1.093 MB
[root@lh-2 registry]# docker push 192.168.0.34:5000/busybox  
The push refers to a repository [192.168.0.34:5000/busybox]
8ac8bfaff55a: Pushed 
latest: digest: sha256:a59906e33509d14c036c8678d687bd4eec81ed7c4b8ce907b888c607f6a1e0e6 size: 505

发现可以push上去了。

[root@lh-2 registry]# ls /opt/data/registry/docker/registry/v2/repositories/
Busybox
[root@lh-2 registry]# curl -XGET 192.168.0.34:5000/v2/_catalog
{"repositories":["busybox"]}

#进入容器看一下镜像实际存储位置

[root@lh-2 registry]# docker ps
CONTAINER ID        IMAGE                           COMMAND                  CREATED             STATUS              PORTS                                          NAMES
23397ef79ec5        docker.io/registry              "/entrypoint.sh /etc/"   15 minutes ago      Up 15 minutes       0.0.0.0:5000->5000/tcp                         berserk_hypatia
[root@lh-2 registry]# docker exec -it 23397ef79ec5 /bin/sh
/ # ls
bin            entrypoint.sh  home           linuxrc        mnt            root           sbin           sys            usr
dev            etc            lib            media          proc           run            srv            tmp            var
/ # cd /var/lib/registry/docker/registry/v2/repositories/
/var/lib/registry/docker/registry/v2/repositories # ls
busybox

#查看镜像的存储目录树

[root@lh-2 registry]# tree /opt/data/registry/docker/registry/v2/repositories/
/opt/data/registry/docker/registry/v2/repositories/
└── busybox
    ├── _layers
    │   └── sha256
    │       ├── 2b8fd9751c4c0f5dd266fcae00707e67a2545ef34f9a29354585f93dac906749
    │       │   └── link
    │       └── 8ddc19f16526912237dd8af81971d5e4dd0587907234be2b83e249518d5b673f
    │           └── link
    ├── _manifests
    │   ├── revisions
    │   │   └── sha256
    │   │       └── a59906e33509d14c036c8678d687bd4eec81ed7c4b8ce907b888c607f6a1e0e6
    │   │           └── link
    │   └── tags
    │       └── latest
    │           ├── current
    │           │   └── link
    │           └── index
    │               └── sha256
    │                   └── a59906e33509d14c036c8678d687bd4eec81ed7c4b8ce907b888c607f6a1e0e6
    │                       └── link
    └── _uploads

16 directories, 5 files

测试放到下篇。

https://www.cnblogs.com/zeppelin/p/5906444.html

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